Apple is looking to hire iPhone and iPod antenna engineers, according to an “Engadget” report (http://www.engadget.com/2010/06/30/apple-hiring-iphone-antenna-engineers-for-some-reason/). This is almost certainly in regard to an antenna issue causing poor reception and dropped calls.”
Apple has gotten mounting complaints that holding the new iPhone in a certain way can impede signal strength, making it difficult or even impossible to make and maintain calls. The problems seems to be more prone to left-handed iPhone owners.
There are three Apple job postings for iPhone/iPad antenna engineers to “define and implement antenna system architecture to optimize the radiation performance for wireless portable devices.” All three were posted on June 23.